trace-compare.c

一个任天堂掌上游戏机NDS的源代码

/**************************************************************************
* DSemu - The Next Generation                                             *
* Compare DSemu register dump with VBA [trace-compare.c]                  *
* Copyright Imran Nazar, 2005; released under the BSD public licence.     *
**************************************************************************/

#include <stdio.h>

// The 17 words, in human readable form
char *entries[17]={
    "r00", "r01", "r02", "r03",
    "r04", "r05", "r06", "r07",
    "r08", "r09", "r10", "r11",
    "r12", "r13", "r14", "r15",
    "flags",
};

int main()
{
    FILE *vba, *dse;
    unsigned int bufVBA[17], bufDSE[17];
    int i, diff, cnt=0;
    
    vba = fopen("gbatrace.bin","rb");
    dse = fopen("dsemu-trace.bin","rb");

    fread(bufDSE, 4, 17, dse);
    // For each instruction, read 17 words from both traces, and compare
    // If a difference is found, print it, and wait 5 seconds.
    do {
	diff=0;
	fread(bufVBA, 4, 17, vba);
	fread(bufDSE, 4, 17, dse);
	for(i=0;i<17;++i) if(bufVBA[i]!=bufDSE[i]) diff++;
        if(diff)
	{
	    printf("Difference at instruction #%d (file offset %d)\n", cnt, cnt*68);
	    for(i=0;i<17;i++)
                printf("%s:vba=%08X, %s:dse=%08X\n", entries[i], bufVBA[i], entries[i], bufDSE[i]);
	    printf("Sleeping for 5 seconds.\n");
	    sleep(5);
	}
	cnt++;
    } while((!feof(vba)) && (!feof(dse)));
    
    fclose(vba);
    fclose(dse);
    return 0;
}

/*** EOF: trace-compare.c ************************************************/